O Draddy - Irish / Ua Dreada. A Sept / Family branch, who had their territory in Co. Cork in Desmond / Des Mhumhain / Southern Munster. Also used as a synonym for O Drudy, which see - Irish / Ua Draoda in the Connacht Province.

O Draffin - Irish / Ua Druifin. A Sept / Family branch, who had their territory in Co. Cavan and nearby in Co. Monaghan in Southern Ulster.

Drake / dragon - English origins. They have been at Drakerath and Drakestown in Co. Meath in the south - east of Northern Leinster since the 13th Century AD.

Drake / dragon. English origins. They came into Ireland with the Oliver Cromwell Invasion and were at Drakestown in Co. Wexford in the south - east of Southern Leinster.

Draper. English occupational origins. They were initially at Draperstown in Co. Derry in the north - east of the Ulster Province in the 17th Century AD after the Confiscation of the 3,500,000 acres of the Heremonian Ui Cobhthaigh Dal Cuinn "Northern" Ui Niaill territories there and the Foreign non - Catholic Plantations there. Later they were in Co. Cork in Desmond / Southern Munster.

Dreelan. English origins. May be a variant of Dreeland or may be of Norman origins / de Druhull known in Irish as An Drithleanach. They were in Co. Kilkenny in the south - west of Southern Leinster in the 15th Century AD. Dreiling was also used there in the 17th Century AD.

O Dreenan. A Sept / Family branch - who had their territory in Co. Galway in Southern Connacht.

O Drennan - Irish / Ua Draighnean - draighnean / blackthorn. A Cenel Suedna Sept / Family branch, who had their territories on the border of Co. Clare in the north - west of the Munster Province and Co. Galway in Southern Connacht. They were the Chiefs of Slieve Eise and Fin there. Some also changed to Thornton there.

Drew - Irish / Ua Draoi. A Sept / Family branch, who had their territory in Co. Clare in the north - west of Thomond / Tuaiscert Mhumhain / Northern Munster. Drury and Drea were also used as variations. See also Drough.

Drew. English origins -

Drewry. See - Drury.

O Drinan. A Sept / Family branch, who had their territory in Co. Clare in the north - west of Thomond / Tuaiscert Mhumhain / Northern Munster. Also used as a variant of Drennan, which see, in Co. Cork in Desmond / Southern Munster.

O Driscoll - Irish / Ua hEidersceoil. later Ua Drisceoil - Eidersceol (the bearer of news.) A very important Sept / Family branch of the Ithian Corca Loigde Tuath / Family region, who were initially based on Erainn Fir Bolg Celts. They had their territory in the south of Co. Kerry in the south - west of Desmond / Des Mhumhain / Southern Munster then nearby in the west of Co. Cork in Desmond / Southern Munster where they were Kings. As aristocratic Gaelic Milesian Celts they were to be descended from *35.Ith. After the Gaelic Milesians gained control over Erinn the original Clanns there were also Celts and in the Tuaths / Family regions they integrated with each other especially with the Eireann Fir Bolg. They remained Celtic for over a 1,000 years until the coming of the Teutonic Vikings in 780 AD and later still the Teutonic Anglo - Normans who invaded in 1169 AD. The O Driscolls take their name from their King, *Eidersceol who lived in the 10th Century AD and their original territory was in the west of Co. Cork near Baltimore and Skibbereen. They were to survive there until the 17th Century AD as a Native Irish aristocratic Family until they were totally ethnically and religiously suppressed by the English. Earlier on in 1537 AD the forces of Henry V111 destroyed their Castles at Baltimore in Co. Cork and at Dunalong while oppressing the Irish Catholic Families there. The O Driscolls also had their own Franciscan Friary, which was on the south - east border of Co. Cork and Co. Waterford in Ormond / Aur Mhumhain / North Eastern Munster in the territory of the Deisi Mhumhain. Ancestors - *36.Lewy / Lughaidh, *35.Ith (Ithians).

O Drislane - Irish / Ua Drislean - dris / briar. A Sept / Family branch, who had their territory in Co. Co. Cork in Desmond / Des Mhumhain /  Southern Munster.

O Droghan or O Drohan - Irish / Ua Druachain. A Sept / Family branch, who had their territory in Co. Cork in Desmond / Des Mhumhain / Southern Munster. Now also in Co. Waterford in the south - east of Ormond / Aur Mhumhain / North Eastern Munster and nearby in Co. Kilkenny in the south- west of Southern Leinster and Co. Wexford in the south - east of Southern Leinster.

                                                                              +On to Droinceat - O Drynan